I read on https://www.sec.gov/edgar/searchedgar/cik.htm:

The Central Index Key (CIK) is used on the SEC's computer systems to identify corporations.

Given a ticker symbol, how can I know the corresponding Edgar's CIK?

For example, for the ticker symbol AXAHY, searching for AXAHY on https://www.sec.gov/edgar/searchedgar/companysearch.html returns nothing, and searching for AXA returns many results. I'm not looking for the CIK of AXAHY in particular (which I think is 0000898427), but a principled way to know the Edgar's CIK given a ticker symbol.

Searching for AXA returns many results on https://www.sec.gov/edgar/searchedgar/companysearch.html:

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You can get this directly from the SEC.

  • In text format: https://www.sec.gov/include/ticker.txt

    The first column is the ticker, and the second column is the CIK for that ticker. Sample:

    a 1090872
    aa    1675149
    aaap  1611787
    aacg  1420529
    aach  1606180
    aacqu 1802457
    aagh  1098009
  • In JSON format: https://www.sec.gov/files/company_tickers.json


        "0":{"cik_str":1750,"ticker":"AIR","title":"AAR CORP"},
        "1":{"cik_str":1800,"ticker":"ABT","title":"ABBOTT LABORATORIES"},
        "2":{"cik_str":1961,"ticker":"WDDD","title":"WORLDS INC"},
        "3":{"cik_str":2034,"ticker":"ACET","title":"ACETO CORP"},

More information about getting EDGAR data: https://www.sec.gov/edgar/searchedgar/accessing-edgar-data.htm

Related question on Quantitative Finance StackExchange: Central Index Key (CIK) of all traded stocks


mainst pointed me to https://sec.report/CIK/, which indeed does the job.

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